Abstract: this research aimed to study the relationship between psychological contract and employee engagement applied on the employees of public business sector Industrial companies in Dakahlia governorate, though a review of previous studies in this regard model has been proposed for study shows the dimensions of psychological contract and employee engagement, in order to collect primary data, a questionnaire has designed and satisfied sample has been collected from mangers, sample size is (366), and the valid questionnaires are (332) 91% of the sample size.the findings show that there is a direct relationship between psychological contract and employee engagement, also it shows that psychological contract has a positive effect on employee engagement